Everybody knows the image, but nobody knows its story. In 1490, Leonardo da Vinci produced his iconic drawing of a man inscribed in a circle and a square: Vitruvian Man. Today the image appears on eve
Toby Lester—the award-winning author of The Fourth Part of the World, celebrated by Simon Winchester as “a rare and masterly talent”—takes on one of the great untold stories in the history of ideas: t
